Typewriting machine



' INV'ENTOR BY CTELMQ EARMW ATTORNEY L C. ANTRIM TYPEWRITING MACHINE Filed Dec. 28,1940

June 24, 19 41.

June 24,1941. I L ANTRM 2,246,969

TYPEWRITING MACHINE Filed Dec. 28, 1940 5 Sheets-Sheet 2 Louis C. Anir-im BY CEKMQNMK I ATTOR N E June 24, 1941. L c. ANTRIM 2,246,969

TYPEWRITING MACHINE Filed Dec. 28, 1940 s Sheets-Sheet 3 I INVENTOR Ma Louis GAnimm BY Q Q 1m I00 ATTORNEY.

June 24, 1941. L c, ANTRIM 2,246,969

TYPEWRITING MACHINE Filed Dec. 28, 1940 5 Sheets-Sheet 4 INVENTOR Lows C. Anirzm BY .czmgym ATTORNEY.

June 24, 1941. L c, ANTRIM TYPEWRITING momma Filed Dec. 28, 1940 5 Sheets-Sheet 5 INVENTOR Patented June 24, 1941 UNITED STATES PATENT OFFICE TYPEWRITIN G MACHINE Louis C. Antrim, New York, N. Y., assignor to Autographic Register Company, Hoboken, N. J a corporation of New Jersey Application December 28, 1940, Serial No. 372,100 20 Claims. (Cl. 197-133) This invention relates to typewriting machines, and more particularly to the type of machines for doing tabulating work.

This application is a continuation-in-part of my copending applications Serial No. 246,263, filed December 1'7, 1938, and Serial No. 255,243, filed February 8, 1939, both of which are now abandoned. I

With machines of the type described, vpunche cards control the typewriting and printing operations which are performed on continuous strips, usually comprising a succession of forms which may be bills, invoices, or the like.

There are variable amounts of typewriting to be done on each form, but the Carroll carriage of the manufacture and sale of the International Business Machines Corporation contains mechanism for ejecting the form when the last item has been writtenthereon and to bring the first line of writing on the nest form to writing position.

Her'etofore, many attempts have been made to feed a manifoldingpile including a plurality of webs or strips through this typewriter carriage and to maintain the webs in alignment with each other and in coordination with the/ machine. Such attempts have been unsuccessful for two reasons-first,* because the strips, in order to keep them in registration, had to be provided with pin-wheel engaging apertures so as to be positively fed; and, second; because the mecha- In one form of the present invention at present preferred, the strips are provided with apertures at form-length intervals, preferably in the form of notches at the side edges of the strips, and these apertured portions;v of the ,strips are adapted to pass between a pair of cooperating contacts so that when the aperture reaches a predetermined point, which may be varied according to the length of the form for the place where the first line of writing occurs, an electric circuit is closed, and this results in the release of the feed rollers so that further feeding of the strips ceases. At the same time, the strip is engaged by a stopping device to prevent overthrow.

The feeding mechanism, asis well known, may be of the positive type, to cooperate with pinengaging apertures in the paper so as to feed and maintain the paper strips in registration with one another. However, it is desirable to omit nism of the machine was incapable of sufliciently 'accurate adjustment to feed the strips exactly to the first line of writing at each operation. The mechanism was nearly perfect, but there was always a slight discrepancy in the ejecting feeding motion, and this was cumulative, with the result that the operator had to frequently readjust the strips relative to the platen of the machine.

These difiiculties are avoided by the present invention by controlling the-feeding operations of 'the strips so that at each operation of the ejecting mechanism the form to be written upon is brought to a definite predetermined position controlled by physical alterations ofthe' strips themselves or by physical characteristics of the pile. With this feeding mechanism, slight but unobjectionable discrepancies in the location of the form at the first line of writing may occur, but, since the strips are brought to a definite position and arrested there under control of the physical alterations of the strips or the physical characteristics of the pile, the discrepancy is not cumulative.

these mutilating apertures, and, according to the present invention, the paper strips, including the interleaved carbon strips, may be suitably stapled together' to travel as one and be frictionally fed through the machine. When the paper strips so stapled together are fed frictionally, creeping occurs between the several strips, but the. amount of creep resulting from the feeding of one form-length is imperceptible and not objectionable. With the strips stapled together, thiscreep is accumulated in advance of the next staple, and when the feed mechanism is released to interrupt the ejection of the strips, the strips are relieved of frictional engagement with each other, with the result that the strips themselves shift relatively and come into registration as defined by the next staple.

If it is not desired to mutilate the form by having apertures in the pile for controlling the ejection of the written form so as to present the first ing the strips thereof together to travel as one through the machine can be very effectively used as the controlling means.

The control circuit in this form of the invention is provided with a gap and the staple or other conducting means, upon being detected, closes the gap and completes the circuit to ren- These der the feeding means ineffective to further feed the strip.

One of the important -features of the present invention is the provision of means for controllingthe ejection of a written form and the location of the next form in writing position which may be applied as an attachment to existing machines in such a way as not to disturb the electrical or mechanical parts of the machine.

This is done by causing an existing partof the machine which moves when the mechanical ejector of the machine is operated, to close a switch through the electrical control provided by the present invention. The only thing which need be done to the Carroll carriage is to manually adjust the mechanism for regulating the quantity of ejection, in the way provided for in the machine, to the maximum, or at least to such points sumciently beyond the length of the forms that are being used in the machine as to assure some idle operation of the ejector mechanism Fig. 3 is a longitudinal sectional view taken along line 3-3 of Fig. 1.

Fig. 4 is a side elevational view looking from the top in Fig. 1.

Fig. 5' is. a detail sectional view taken along line 55 of Fig. 1, showing the feeler mechanism.

Fig. 6 is a. transverse sectional view taken along line 6-6 of Fig. 5.

Fig. 7 is a detail sectional view taken along line 'l-1 of Fig. 1, showing the braking mechanism.

Fig. 8 is a transverse sectional view taken along line 88 of Fig. '7. v

Fig. 9 is a top plan view partly in section of the circuit-establishing switch.

Fig. 10 is a longitudinal sectional view taken along lines Ill-l0 of Fig. 9.

Fig. 11 shows a diagrammatic view of the mechanism during normal feeding operation.

Fig. 12 is a diagrammatic view, similar to Fig. 11, showing the feeler in closed-circuit position and the feeding mechanism released.

Fig. 13 is a fragmentary showing of the feeler mechanism shown in detecting relation with the physicalalterations of the continuous stationery.

Fig. 14 is,a diagrammatic view of the feeding mechanism of another form of the invention.

, Fig. 15 is a diagrammatic view, similar to Fig.

14;, showing the fe'eler of the form of the invention shownin Fig. 11 in closed-circuit position..-

Fig. 16 is a 'fragmentary showing of the feeler mechanism in detecting relation with the staples 'oilthe continuous stationery.

""Fi'ggl' 'l is a diagrammatic view of the m feeler echariism of another-form of the invention in closed c'ircuit position.

The attachment of the present invention is adapted to be readily applied to a standard -tabulating machine without disturbing or removing the electrical or mechanical parts of the machine. It is illustrated as being applied to a machine 20, having a Carroll carriage, of the manufacture "and sale of the International Business Machines Corporation.

As is well known in machines of this type, continuous strips of stationery 2| suitably secured together at form-length intervals by staples 2|, preferably located on the tear-line between each form and on each side of the center of the strip, may be utilized, the' strips passing through the machine, around a platen 22, and under a pressure roller 23 cooperating therewith. The printing mechanism of the machine indicated as a type bar 24 is automatically controlled through mechanism not shown by a card having suitably arranged apertures representing predetermined data, the machine scanning the data from the card and automatically controlling the writing mechanism to-translate this information into impressions on the continuous strip. During the writing operation, the platen is advanced line-by-line until all of the required data is inserted on the form.

The machine of the type described is provided with ejecting means, indicated generally at 25, for quickly rotating the platen and feeding the form from the machine after the writing operation has been completed and presenting the first line of writing in the next form in writing position.

The operation of the Easting mechanism in this type of machine is 'tiated by a suitably located hole in the card so that the controlling mechanism, upon reaching thi hole, immediately puts the ejecting mecha into operation to rotate the platen and quickly feed the form out of writing position. Mounted on the side of the machine is a movable part 26 which is operated by the ejecting mechanism during the ejecting period to'move outwardly and re-- main in extendedposition.

As shown in Fig. 4, the ejecting mechanism can by means of handle 25a be manually adjusted so as to advance the strip a definite number of inches so as to present the line of writing on the .next form in writing position.

In actual practice, it has been difficult and almost impossible to adjust the mechanism so that it places the first line of writing exactly in line of position in each operation thereof, and the error in such adjustment during the operation of the machine accumulates so that before very long the position of the strip in the machine must be manually adjusted by the operator, thus requiring the attention of the operator to see that the succeeding forms are in proper position, and, if not, correcting the error.

The attachment of the present invention 10- cates each form individually in proper position,

and, therefore, eliminates the accumulated error in the ejecting of the sheets, rendering it unnecessary for an operator to be constantly watch-- and manually correcting the and another notch 36 in the bottom edge. The

notches are so located as to be fitted over existing studs 31, 36, on the frame 29 of the machine to be supported thereby. The front portion of the attachment is locked to the frame for movement therewith when the frame is moved to open position by a handle 48 when inserting the paper therein. This is accomplished by means of a locking plate or latch 4| pivotally mounted on the rod 32 and having a projection 42 (Fig, 3) extending under the stud 38 thus preventing relative movement between the front portion of the attachment and the frame to which it is secured. The latch 4| may be urged into latching position by a spring or by'gravity, as desired, A handle 43 is provided on the latch whereby it can be readily released when it is desired to remove the attachment, from the machine.

According to the present invention, a shaft 44, having a feed roller a secured thereto, is rotatably mounted to extend between the side plates 30, 3 l. Preferably, the feed roller is adapted to be driven from the rotating platen through suitable gearing. As shown in Fig. 2, the roller shaft 44 has a gear 45 secured thereto. A pair of idler gears 46, 41 are mounted on the side plate, one is connected to the gear 45 and the other meshes, when the attachment is placed on the machine, with a gear 48 carried by the machine and driven from a gear 49 secured to the platen shaft. Thus, as the platen is rotated during the .operation of the machine, the feed roller will be driven,

Cooperating with the feed roller to feed the continuous strip are a plurality of pressure rollers 50 mounted on the shaft 51 extending transversely of the attachment. The rollers, as shown in Fig, l, are adjustably secured to the shaft by set screws, and can be properly located with respect to the stationery passing through the machine to properly feed the same.

The shaft carrying the pressure roller is mounted in hearings in the ends of a pair of arms 54 to rotate therein, the arms being pivotally mounted on studs 56 carried by the end plates 30, 3|, and enables the pressure rollers to be moved into and out of engagement with the feed rollers. The pressure rollers are normally urged into engagement with the feed roller by a spring 51, as shown in Fig. 11.

When the attachment is secured to the machine, the usual pressure roller 23, cooperating with the' platen, is released so that the feed rollers of the attachment control the feeding of the continuous forms through the machine.

It is desired that these feed rollers be so controlled that they will properly locate in writing position the first line of writing on the next succeeding form. To accomplish this, the present invention provides a control unit forming a part of the attachment which is mounted on the back of the machine to cooperate with the continuous strip as it enters the machine, This control unit comprises a pair of side plates 60, 6| secured together by a pair of rods 62, 63 extending transversely of the machine.

As shown in Fig, 3, this part of the attachment is secured to the machine by having each of the side walls provided with a notch 64 in its forward face adapted to he slipped endwise over an existing stud 65 on the side walls of the machine, and a notch 86 opening on the unders'urface adapted to engage and be supported upon another stud 81 carried bythe side walls of the machine. A latch plate '68 is pivoted to the side plates, and is provided with a hooked portion 68a adapted to extend under the second stud and hold the unit in place on the machine.

' invention shown in Figs. 1 to 13, feelers or detectors are provided for engaging physical alterations in the strips to operate a means to stop the advancing of the strip upon the detection of one of these alterations. As shown in Fig. 1, a channel member 69 of conducting material extends across the space between the side plates 60, 8|, so as to form a table Ill over which the advancing strip can pass, and has its ends ll bent up, each end being secured to a slotted block 12 slidably mounted on the upper edge of the side plates as shown in Fig. 2.

As shown in Fig, 5, the channel insulated from the blocks, it being secured to the blocks by screws 13 passing through insulating bushings M,

The blocks 12 as adjustable along the upper edges of the side plates to adjust the position of the table 10 on the attachment for the purpose to be described, and are locked in place by a screw 15 passing into a channel 16 in the side plate.

Disposed between the bent-up ends of the channel member is a rod 11 which is secured in place and insulated therefrom as shown at 18 in Fig. 1. Slidably mounted on the rod are a pair of contact carriers I9 which may be adjusted along the rod transversely of the table and locked in adjusted position by means of set screws W. The contact carrier has a dependent feeler or detector contact 8! pivotally mounted thereon, and a spring 82 secured to the carrier and en--' gaging the contact to normally bias it with a light pressure in a direction in which it will engage the surface of the table over which the pa- 8 per is fed.

The contact carriers are adjusted transversely of the machine to properly locate the feeler contacts so they will engage the physical alterations in thecontinuous strip passing through the machine. Where, as in the illustrated form of the invention, the physical alteration take the form of notches 83 in the side margins of the forms, as shown in Fig. 13, the adjustment can be facilitated by securing a plate 85 to the outer edge of the contact carrier plate, the plate having a dependent finger 86, which can be moved into register with the sides of the strip to properly locate the contacts over the feed-arresting physical alterations in the trip.

The fingers 86, one on each side of the advancing strip, also serve as a means for guiding the strips in their passage through the control unit to maintain them in coacting relation with the detecting mechanism.

If desired, additional marginal guides can be provided to properly lead the strip to the platen. A pair of such guides 81 are shown mounted on the rod 32, 33 and held in adjusted position by set screw 88, so as to engage the edges of the strips as they pass between the rods as shown in Fig. 3.

The table Y10 and the detector contact are included in the feed control circuit andare connected one to each side of the source of energy so that a gap exists between the two when the detector contact rests on the continuous strips overlying the table. When a physical alteration is electrically in the strip passes under the detector contact 'as shown in Fig. 13, it is free to move. into engagement with the table to complete the control circuit to stop the'feeding of the strip. The stop-v ping of the 'feed is accomplished by securing a pair of arms 90 to a rod or rock shaft 9| rotatably mounted between the side plates 30, 3| of the front section. The-arms extend over the pressure roller carrying arms and have a block 92 to engage the same. One of the actuating arms has a portion 90a which extends "over the rear portion. of the attachment and has pivotally connected thereto an armature 33 adapted to be 02 against the pressure roller carrying arms to move the pressure roller about .its pivotal mountlug away from the feed roller to stop the feed of the continuous strips.

If it is not desired to mutilate the strips in order to provide a controlling aperture therein, other physical characteristics of the pile may b employed to eflect the controlling-of the feed 01 the pile. ,In the form of the invention shown in Figs. 14 to 16, the control is carried out by a conducting mean -extending through the pile to bridge the gap in the control circuit. While this conducting means may take many forms, in'the preferred form of the invention the wire staples, which are used to secure the strips together so that they travel'as one through the machine, are utilized to render the Ieeding mechanism, which may be of the type described with regard to Figs 1 through 13, ineil'ective. The control unit isalso. of the same construction as previously described except, as is shown in pig. 16, thekontrolling means comprises. a pair of contact carriers I19 adapted to be mounted on the rod 1! for lateral adjustment and located in adjusted position thereon by set screws I80. The carrier can be \adjusted with regard to the pile gf stationery III so that a detector contact IBI, pivoted thereon and urged into engagement withathe pile by a spring I02, will engage the wire staples I2I positioned at form-length intervals in.the s'ta-' tionery as the stationery is fed through the machine.

It will be noted that the contacts IOI have a longcontacting portion IOIa which extends in thedirection of movement of the paper. The contacts, as shown in Fig. 14, normally bear upon the upper-surface of the stationery as it passes over the table I0. The contacts IOI and the table I. are. connected in the'control circuit so that the paper passing therebetween i'orms a gap-in the circuit. x v

Asthe stationery is fed through the machine during the ejecting period, the staples will be carried thereby and will pass between the contact Ill and the table and in so doing bridge the gap and the circuit whereupon the solenoid 94 is energizedto causea separation of the feed rollers a, El and render the feeding means ineffective.

The long face Illa of the contacts will maintain the circuit closed for suflicient time to insure operation of the control mechanism. a

In order to maintain the paper moving in its proper path so that the staples and the detectors will always be in alignment, the present invention provides carriers I05 adjustably mounted on .the

rod 11 having dependent fingers or guides I86 which engage each of the side edges of the paper and guide it during its movement.

In. the broader aspects of this form of the 5 invention, the contacts I8I 'need not be disposed so that the circuit is closed to a contact located below the pile, but the contacts may be so positioned side by side that the staple will bridge a circuit between them to close the control circuit, 10 or the. strips may be pasted together and treated at intervals so as to be rendered conductive and act to bridge the circuit upon detection of the conducting portion. o

If desired, the strips may be positively fed by pinwheei feeding aperturestand the staple also inserted to secure the strips.v oi the pile together and to act as the control medium for the feeding of the strip. i The control of the feeding means may be ef- 17, wherein a carrier 219 pivotally supports a de-- fected in still another manner, as is shown in Fig.

tector member 28I which rests upon the strip 22'I As an enlargement in the strip, such as the staple ZZI or a projection on the pile passes under 25 the detector, it will pivot in a clockwise direction an an insulated ear 28Ib. will engage a yieldable contact 225 insulatedly mounted on the carrier 219 and cause the contact'to be pressed into engagement with a contact. 226 secured to 30 the carrier 219. The contacts are connected-in the control circuit of the solenoid 94, and. upon being closed, complete the circuit and cause the feeding means to become ineffective to feed the strip.

Toprevent theoperation of the feed-arresting means at any time except during the ejecting period, the. control circuit is provided with a monitor switch which is closedonly during the ejecting period. "I the preferred form of the 4 invention the moni' r switch is associated with the moving part 0 the'ejector mechanism, ,and the movement of said part utilized to close the switch only during the period in which the ejecting mechanism is in operation.

Asshown in Figs. 3, 9 and 10, the switch -rea.r portion and having a plunger IOI with an insulatiom head I 0Ia slidably mounted at the front part thereof and in a position to be engagedby the moving part of the ejector during the ejecting period. As shown in Figs. 9 and 10, the plunger is normally urged into open-circuit position by a spring I02, and its movement limof to establish the control circuit when moved by the movable member. The contact I09 can be protected by an insulating cover I00a if desired. The limited movement of the contact I05 with respect to the plunger against the spring I08 maintains a good electrical engagement between the two contacts, when in closed-circuit position, and also aids in breaking the circuit at the end of the ejecting period.

Whenthe attachment is applied to the machine, the ejecting mechanism is adjusted in such a manner that it will have at least a short idle period after the pressure roller has been re- 7 leased. In other wordsjinstead of ejecting for a comprises a plate I00 secured to the side wall of the slot I01 on the contact.

ten inch form, the mechanism is set for a twelve inch form so that there is suflicient operation of the feed roller during the ejecting period to insure proper position of the strip.

In order to prevent the sheets from feeding during the idle rotation of the feed roller, means are provided for positively stopping the strip.

This means may take the form of any friction drag, but in the preferred form of the invention it comprises a plunger H 0, having heads of insulation to prevent false circuit closing, mounted in a block HI adjustably secured by a screw H2 on the rod ll mounted between the ends H of the channel member and over the table 10. The plunger is normally urged out of contact with the paper by means of a spring H4. The plunger is moved into engagement with the paper by means of an actuating arm H5 secured to a rod H6 rotatably mounted in the upperportions .of the ends ll of the channel-shaped member. The rod is provided with a spring lll (Fig. 1) for normally urging the arm H5 out of engagement with the plunger. The position of the arm is controlled by a set screw H8 carried by a plate H9 insulatedly mounted on the plungerwcarrying block.

The brake is to be applied simultaneously with the stopping of the feeding means. For thispurpose, the rod H6 carrying the actuating arm H5 has secured to the end thereof a lever H8 having a pin H9 adapted to be engaged by the portion 90a of arm 90 when the solenoid is energized and the pressure roller of the feeding means released.

The operation of the control is .as follows:

After the writing operation is completed, the ejector mechanism is initiated to drive the platen to eject the strip. The feed rollers of the attachment will be driven from the platen and -will continue feeding the strip over the platen and stop the next form in proper position. The contact carriers will have been adjusted transversely of the continuous strip so that the detector contacts are disposed in the path of the physical alterations or other characteristics of the s rip.

The ejector mechanism will drive the feed rollers, which will draw the continuous strip,

over the platen. As soon as the ejector mech-' anism is initiated, the movable pa'rt actuated thereby will close the switch and establish the control circuit to the detector contacts 8|, and, upon the detector contacts encountering a physical alteration or characteristic in the strip, they will complete the circuit to the solenoid which will cause the armature to be drawn into the core, The armature will pull down the actuating arms 90 and will cause the blocks 92 carried thereby to engage the ends of the pressure roller carrying arm and raise the pressure roller out of engagement with the feed roller, and also operate the lever of the brake mechanism to apply the brake and instantly stop the feed of the continuous "strip with the form in proper position. While it is true that the adjustment may be such that the first line of writing is not in an accurately determined position, such error will not be cumulative inasmuch as each form is located separately.

The ejector mechanism will continue to operate for the duration-of .the ejecting period. but, inasmuch as the pressure roller is out of engagement with the feed roller, the strip will not be fed. As soon as the ejector mechanism has completed its period of operation, the movable par-t carried thereby will release the monitor switch and open the circuit to the solenoid whereupon the pressure roller again engages the feed roller and the strips may again be fed line-by-line during the normal operation of the machine through the writing operation, and the circuit for the" control mechanism will remain open until the next ejecting period.

Variations and modifications may be made within the scope of this invention and. portions of the improvements may be used without others.

11. In a typewriting machine of the type described, means for feeding a continuous strip having a succession of printed forms thereon through-the machine as line after line is written; means for operating the feeding means to continuously and quickly eject the remaining portion of a form from the machine; and means rendered operative by the trailing-portion of a succeeding form of the advancing continuous V strip for controlling the feeding means during the ejecting period to stop the advance of .thestrip when the first line of writing on the next succeeding form is in proper writing position.

2. In a typewriting machine of the type 'described, means for feeding a continuous strip having controlling means in the form of either I apertures therein or staples extending therethrough at form-length intervals through the machine during a writing period; ejecting means continuously operative during an ejecting pe-' riod for feeding the strips an amount greater.

than the forms being used to eject the forms from the machine; and mean-s separate from I the feeding means and including a feeler engagmg the trailing portion of the continuous strip and cooperating during the ejecting period, with the controlling means in the strip for rendering the ejecting means meflective to feed the continuous strip, whereby the next successive form on the continuous strip willbe stopped in proper writing position.

3. In a typewriting machine of the type de- 1 scribed having a platen for supporting in writing position a continuous record strip having a succes'sion of form-lengths and havingjcontrolling means in the form of either physical alterations or electrical conducting means therethrough at form-length intervals;- means for feeding the strip over the platen during a writing operation; means for automatically writing on the continuous strip; means rendered operative upon completion of the writing operation for actuating the feeding means toeject the remainder, of a form-length continuously and quickly to present the next succeeding form length in writin position; and means including means cooperable with the controlling means in the trailing portion of the continuous strips for rendering it the feeding means ineffective to advance the strip and properly locatefthe next succeeding form in writing position. v

4. In a typewriter of the type described, a platen; means for feeding a continuous strip comprising a succession of form-lengths over the platen during a, writing operation; means for automatically writing on the continuous strip; means automatically rendered operative at the end of the writing operation for actuating the feeding means to eject continuously, for a period greater than necessary, the remainder of a formlength from the machine and present thefirst line of writing on the next succeeding formlength in writing position, said ejecting means being adjustable and adjusted to eject a greater length of strip than the form-length being used; and means under control of the advancing continuous strip for rendering the feeding means ineffective to further feed the continuous strip when the next succeeding form is in desired writing position.

5. In a typewriting machine of the type described, a platen; means for rotating the platen during the writing operation; ejecting means; for rotating the platen during an ejecting period after the completion of the writing operation; an attachment adapted to be mounted on the machine and having feed means connected to the platen to be driven thereby for feeding a continuous strip having successive forms thereon, said feed means including a fixed roller and a movably mounted pressure roller; and means on said attachment and control-led by the advancing continuous strip for moving the movable rolier away from the fixed roller to render the feeding means ineffective irrespective of the operation of the platen under control of the ejecting means to stop the strip and locate the next form on the continuous strip in proper writing position for the next writing operation.

6. In a typewriter of the type described, the combination of feeding means for feeding continuous stationery through the typewriter during a writing operation; ejecting means for rapidly feeding the continuous stationery out of the typewriter, said ejecting means including a movably mounted pressure roller in enga ement with the continuous strip; and electrically controlled instrumentalities under control of the advancing continuous strip for moving the pressure roller out of engagement with the strip to stop the advance thereof when a preceding portion of the strip is in writing position.

7. In a typewriting machine of the type described, means for feeding continuous stationery through the typewriter during a writing operation; ejecting means for continuously feeding the stationery out ofthe typewriter during the ejecting period said ejecting means including a part moved in a predetermined manner during the ejecting period; an attachment to be mounted on the machine having means associated with said movable part to establish a control circuit during the entire ejecting period; means cooperating with the continuous stationery for completing the circuit; and means operated upon completion of the circuit to render the ejecting means ineffective to further feed the continuous strip and properly locate the strip in writing position as desired.

8. In a typewriting machine of the type described, a platen: means for feeding a-continuous strip comprising a succession of formlengths over the platen during a writing operation; means for automatically writing on the continuous strip: means automatically rendered operative at the end of the writing operation for operating the feeding means to continuously eject the remainder of a form-length. and present the first line of writing on the next succeeding formlength in writing position; and means under the control of the trailing portion of the advancing continuous strip for rendering the feed means ineffective to advance the strip when the next succeeding form is in desired writing position.

9'. In a typewriting machine of the type described, means for feeding continuous stationery through the typewriter during a. writing period; ejecting means for continuously feeding the stationery out of the typewriter during the ejection period, said ejecting means including a part moved in a predetermined manner during the ejecting period; an attachment to be mounted on the machine having means associated with said movable part to establish a control circuit during n the entire ejecting period; means cooperating with the continuous stationery for completing the circuit; and means operated upon completion of the circuit for rendering the ejecting means ineifective to further 'feed the continuous stationcry and properly locate the stationery in writing position as desired. and for simultaneously applying a braking action. to the continuous stationery.

10. In a typcwriting machine of the type de- I scribed, a platen; means for rotating the platen line-by-linc during the writing operation; ejecting means for rotating the platen rapidly during an ejecting period, said ejecting means including a part moved in a predetermined manner during said period; an attachment having feeding means connected to said platen to be driven thereby for feeding a continuous strip thereover and including a movably mounted pressure roller: means on said attachment associated with said movable part to establish a control circuit during the ejecting period; means cooperating with the advancing continuous Web for completing the control. circuit; and means actuated in response to the completion of the circuit to move the roller and relieve the pressure thereon and render the operation of the ejecting means ineffective to further feed the continuous strip and thus properly locate the strip in writing position for the next writing operation.

11. In a typewriting machine of the type described, an attachment having feeding means including a pair of feed rollers for feeding a continuous strip having a succession of printed forms thereon through the machine line-by-line; means for operating the feeding means to quickly eject a form from the machine; and means carried by the attachment and controlled by the advancing continuous strip for separating the feed rollers to stop the advance of the strip when the first line of writing on the next succeeding form is in proper writing position.

12. In a typewriting machine of the type described, an attachment having feeding means including a pair of feed rollers for feeding a continuous strip having a succession of printed forms thereon through the machine; means for operating the feeding means to quickly eject a form from the machine; means carried by the -attachment and controlled by the advancing continuous strip for separating the feed rollers to stop the advance of the strip when the first line of writing on the next succeeding form is in proper writing position; normally inoperative brake means carried by the attachment; and

means for applying the brake to the strip simultaneously with the separation of the feed rollers.

rollers for feeding a continuous strip having a.

succession of printed forms thereon through the machine; means for operating the feeding means line-by-line during a writing operation and thereafter continuously to quickly eject a form from the machine; and means controlled by the advancing continuous strip for separating the feed rollers to stop the advance of the strip when ing strip for operating the common actuator.

18. In atypewriting machine of the type described, having a platen for supporting in writing position'a continuous record strip having a succession of form-lengths and having predetermined characteristics thereon at form-length intervals; feeding means for advancing the strip over the platen; means for operating said feeding means intermittently to advance the strip lineby-line during the operation 0* writing a formlen'gth; power means for operating the feeding means continuously to eject the remaining porthe machine; and electro-responsive means controlled by the advancing continuous strip for separating the feed rollers to quickly stop the advance of the strip when the first line of writing on the next succeeding form is in proper writ ing position.

15. In a typewriting machine of the type described, feeding means including a pair of feed rollers for feeding a continuous strip having a succession of printed forms thereon and controlling means in the form of either physical a1- terations or conducting means therein through the machine; means for operating the feeding means line-by-line during a writing operation and thereafter continuously to quickly eject a form from the machine; electro-responsive means for separating the rollers to stop the feeding of the strip; means for establishing a circuit to the electro-responsive means during the ejecting period; and means for completing the dircuit upon the detecting of the controlling means in the strip to energize the electro-responsive means to separate the rollers, said circuite'stablishing means opening the control circuit at the end of the ejecting period.

16. In a typewriting machine of the type described, feeding means for feeding a continuous strip having a succession of printed forms thereon through the machine; means for operating the feeding means to quickly eject a. form from the machine; normally inoperative brake means for stopping the advance of the strip; and means controlled by the advancing continuous strip for simultaneously rendering the feeding means inoperative to advance the strip and for applying the brake to the strip when the first line of writing on the next succeeding form is in proper writing position.

17. In a typewriting machine of the type described, feeding means including a pair of feed rollers for feeding a continuous strip having a succession of printed forms thereon through the machine; means for operating the feeding means line-by-line during a writing operation and thereafter continuously to quickly eject a form from the machine; normally inoperative brake means for the strip; a common actuator for separating the feed rollers and applying the brake to the strip; and means controlled by the advanction of the form-length being written; means for actuating the power means after the writing operation, said power means being so coordinated with the feeding means as to operate the latter an amount in excess of that necessary to bring the first line of writing on the next form-length to the writing line of the platen; and means rendered operative by the detection of the physical characteristic of one of the forms of the strip for interrupting the advancement of the strip under the control of said power means when the first line of writing onthe said next form-length reaches the line of writing.

19. In a typewriting machine of the type described having a platen for supporting in writing position a pile of superposed continuous strips having a succession of form-lengths and having predetermined characteristics thereon at formlength intervals; means for feeding the pile through the .machine as line after line is written; means for operating the feeding means to continuously and quickly eject the remaining portion of a form from the machine; and means for controlling the feeding means during the ejecting operation to stop the advance of the pile when the next succeeding form is in proper writing position, said last-named means including a control circuit having means coacting with the pile to normally maintain the circuit ineffective, said circuit becoming efi'ective to .stop the feed upon detection of a predetermined characteristic of the pile. I

20. In a typewriting machine of the type described having a platen for supporting in writingposition a. pile'of superposed continuous strips having a succession of form-lengths and having predetermined characteristics thereon at formlength intervals; means for feeding the pile through the machine as line after line is written; means for operating the feeding means to contlnuously and quickly eject the remaining portion of a form from'the machine; and means for controlling the feeding means during the ejecting operation to stop the advance of the pile when the nect succeeding form is in proper writing position, said last-named means including a control circuit having a pair of spaced contacts therein. coacting with the pile to form a gap in said circuit, the gap being closed upon detection of a predetermined characteristic of said pile.

LOUIS C. ANTRIM. 

